Sampling device for pulp-digesters.



P. S. TUTTLE.

SAMPLING DEViCE FOR PULP DIGESTEVRS. APRucATloN FILED JULY 3l. 1916.

Patented Apr. 10, 1917.

A y ,v (11110 @mem/hoz PHIL S. TUTTLE, OF JOI-INSONBURG, PENNSYLVANIA.

SAIVIPIJING DEVICE FOR PULP-DIGESTERS.

Application filed July 31, 1916.

To all whom t may concern Be it known that I, PHIL S. TUTTLE, a citizen of the United States, residing at Johnsonburg, in the county of Elk and State of Pennsylvania, have invented certain new and useful Improvements in Sampling Devices for Pulp-Digesters, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to appliances for treating paper pulp and particularly means whereby the stock or chips within a paper pulp digester may be sampled.

The general object of my invention is the provision of a very simple appliance adapted to be attached to the usual digesters for paper pulp which is so constructed that it will permit a sample of the stock to be withdrawn from the interior of the digester for examination.

A further object of the invention is the provision of means whereby the interior of the digester is cut off from the outside air previous to, during and `after the sample of stock has been withdrawn.

A further object of the invention is to provide means for withdrawing a sample of stock from the digester including an implement designed to engage the sample of stock and withdraw it, this implement being movable longitudinally through a casing, the casing being provided with a valve which may be turned to cut oli' or establish communica-tion between the outer end of the casing and the interior of the digester and the outer end of the casing being provided with a door or closure normally held in `air tight engagement with the casing but arranged to be opened so as to permit the sample of stock to be withdrawn.

Other objects will appear in the course of the following description.

My invention is illustrated in the accom* panying drawings, wherein:

Figure 1 is a longitudinal sectional view of my device;

Fig. 2 is a like view to Fig. 1 but showing the valve open and the rod forced inward;

Fig. 3 is an elevation of the construction as in Figs. 1 and 2; and

Fig. 4 is a fragmentary top plan view showing the cover 28 and allied parts.

Referring to these figures, 10 designates the wall of an ordinary paper stock digester, this wall being provided with an opening Specicaton of Letters Patent.

Patented Apr. 1d), 1217.

serial no. 112,382.

11. Attached to the wall 10 in any suitable manner, as by bolts, is a valve casing 12 having end flanges 13, this valve casing being formed at its middle with a seat for a rotatable or plug valve 14 having a passage .15 through it. vWhen this valve is turned 1n one position it cuts off passage through the valve casing and in the other position permits passage through the valve casing.

Coacting with the valve casing 12 is a body or casing 16 which is hollow and which at one end is provided with flanges 17 whereby it may be connected to the Hanges 13 of the valve casing 12. The casing or body 16 at its opposite end is closed as at 18 except for the'central passage 19 and this end wall is formed to provide a packing chamber 2O containing. packing 21, this packing being engaged by a gland nut 22. F

The outer extremity of the casing 16 is formed to provide a yoke 23 and passing through the yoke 23 and through the pas.

sage 19 is a rod 24 which carries on its inner end a worm or screw 2.and on its outer end a hand wheel 26 whereby the rod may be rotated and whereby it may be reciprocated. The gland nut 22 surrounds the rod 24 and bears against the packing 19 so as to cause this packing to have close Contact with the rod 24. The head of the gland nut 22 is disposed within the yoke 23 so that it may be readily operated.

The casing 16 adjacent the end wall is formed with an opening 27 having a length equal to that of the screw 25 and any dew sired width. Normally closing this opening 27 is a cover 28, which may have air tight engagement with the exterior face of the casing 16 which cover is hinged at 29 upon ears 30. The cover is formed at each side with a laterally projecting bifurcated lug 31 adapted to be engaged by an eye bolt 32 pivotally mounted upon a bolt 33 passing through ears 34 on the casing. By this means the cover may be drawn tightly into engagement with the casing or may be as readily released. Either a single eye bolt 32 or two eye bolts disposed on opposite sides of the cover may be used.

The operation of the invention is obvious from the drawings. l/Vhen it is desired to secure a sample of the stock in the digester to see whether it is properly cooked. the valve 14 is turned from the position shown in Fig. 1 to the position shown in Fig. 2. The rod 24 is then shifted longitudinally to carry the worm 0r screw 25 into engagement with the stock. When it is fully pushed in the rod is rotated byn the hand wheel 26 which causes a certain amount ofstock to be detached and d awn into the valve casing 12. The rod 2i is then drawn back carrying the stock with it into position beneath the cover 28. The valve 14 is then closed and the cover released from its eye bolt 32 and raised.` The stock may then bev withdrawn from the casing 16 and examined.

The body 16 is tapped at 35 for a oneinch d rain pipe, by which the liquid contents of the body may be withdrawn while the test is being made and for washing out the chamber.

It will be seen that this device is very simple, that it permit-s an inspection of the stock at any time Without relieving to any great extent the pressure within the digester. The stock may be inspected at short intervals and thus the over cooking or under cooking of chips will be avoided so that a` uni-form cooking of the chips will be had at allI` times.V

While I have illustrated a very effective form of my invention I do not wish to be limited to this as it is obvious that changes may be made therein without departing from the .spirit thereof.

l Having described my invention, what I claim is:

1. A device for withdrawing samples comprising a casing open at one end and having an opening in its side, a valve adj acent the open end of the casing and shiftableinto position to eitheropen or close a passage-way through the casing, and a rod longitudinally movable through t-lie casing and through the valve when it is open and having onits extremity means for engaging material. to be withdrawn.

V 2. A device for withdrawing samples comprising a casing open at one end, a rod rotatable and reciprocatable in` said casing, the rod being longer than the casing and having on its inner end a screw, packing means surrounding the rod where it passes through the casing, a valve located ad]acent the open end of the casing and shiftable into position to either open or close a passage-way through the casing, said casing having an opening adjacent its outer end, a cover normally closing said opening, and means for drawing said cover into tight engagement with the casinf.

i 8. A device` for withdrawing samples comprisinga casing composed of two sections, one ot said sections being open at both endsand abutted against one en d of theV other section, the iirst named section constituting a valve casing, the other section being provided with an opening and with a packing chamber, a rod rotatable and reciprocatable through the packing chamber of the last named section and through the valve when the latter is open, said Vrod Vbeing longer than the casing, a cover for the opening, and means for clamping the cover to the casing.

4. A device for withdrawing samples including a casing made in two sections, one of said sections being open at opposite ends and constituting a valve chamber, theother section being abutted at one end against said valve chamber and at its outer end being formed with av packing chamber with` a yoke extending beyond the packing chamber, said casing section being also formed with an opening in its side wall, a rod passing through the yoke through the packing chain-` ber and through the casing and having a length greater than the full extent of the casing and yoke and being reciprocatable ,and rotatable withinthe casing, a gland nut, having its head disposed within the yoke and engageable with the packing chamber, a cover normally closing said opening and having means whereby it may be` urgedinto tight engagement therewith, and a valve in the valve section of the casing sliiftable to establish or disestablisli communication throughthe casing.

5. The combination with a container, of means for withdrawing sample material from the container comprising a casinghaving its inner end permanently attached to and opening into the container, the outer end or the casing being formed with an opening in its wall, a valve disposed adjacent the inner end of the casing and adapted to be shifted to Veither close orv open cominunication through the casing,4 a longitudinally shiftable and rotatable rod extending through the casing and having a screwxon its inner end, said rod being adaptedtopass Y side, a valve in the casing adapted to .open

or close a passage-way therethrough, and a sample withdrawing member movablv disposed within the casing and shiftable through the casing when the valveis opened,

to secure a sample.

In testimony whereof I hereunto yafIiX my signature in the presence of two witnesses.

PHILS, TUTTLE. Vtitnesses:

ALsoN L. JoNiis, EDWARD VViNsLow.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

